LI35.31-P-056961 Service Bulletin/Repair Instructions

•
Howling, humming, droning, vibrations from drivetrain

Topic number
L135.31-P-056961
Version

Design group
35.31 Rear axle center assembly
Date
08-12-2013
Validity
Affects all rear-wheel drive vehicles and 4MATIC vehicles
Reason for change
Document no. changed under remedial action.
Reason for block
Complaint:

Howling, humming, droning, vibrations from the drivetrain in a specific vehicle speed range (e.g. between 50 mph and

55 mph)

If the complaint applies to the entire vehicle speed range - The differential has bearing damage.

Note: Two new damage types are available:

G 5 Noise in entire vehicle speed range - Bearing damage (see reference noise in attachment).

G 6 Noise within limited speeds
Attachments

File
Designation
Bearing Noise Reference File.mp3
Reference File
Cause:

Drivetrain complaints can be traced to a number of different causes.

Imbalance of the wheels, imbalance of the propeller shaft flange, a stressed drivetrain and unfavorable positioning of

the propeller shaft relative to the rear axle differential.
Remedy:

We recommend performing a test drive first to establish the nature of the complaint.

For accurate analysis and localization of the noise, use the "Steelman Chassis Ear" noise diagnosis kit (Optional

Equipment - Please contact our Approved Equipment provider BASS, formerly known as SPX, at 1-888-458-4040)

Vibrations, humming and droning, howling may all be caused by imbalance of the wheels, tire flat spots or radial and

lateral runout of the wheels.

The following procedure is recommended:

1.) Fit new, balanced genuine Mercedes-Benz wheels (test wheels) on the vehicle. Then perform a test drive.

2.) Check the bolted connections of the propeller shaft:

Are all the bolts present?

Are all the bolts the same length?

Do all bolted connections have washers?

Check the tightening torques (see WIS)

3.) Change the positioning of the rear axle differential flange relative to the propeller shaft:

Three-arm flange: Twist through 120 degrees

Four-arm flange: Twist through 90 degrees

4.) Relieve stress in the engine mounts, transmission mounts, exhaust system, flexible coupling, propeller shaft intermediate bearing/center bearing (Ll22.10-P-056910).

Check flexible coupling for cracks and replace if necessary

Relieve stress in propeller shaft intermediate bearing/center bearing (if the intermediate bearing/center bearing has th

be replaced, the aluminum version must be used).

08-12-2013 3:51 PM

©Copyright Daimler AG
PARKEGL
Page 1110
)(ENT RY

When relieving the stress in the intermediate bearing/center bearing of the propeller shaft, make sure that the vehicle

is standing with all four wheels on the ground.

With the bolts of the intermediate bearing/center bearing slackened, push the vehicle forward and back or wiggle the

propeller shaft.

Then retighten the bolts to the specified tightening torque (AR41.10-P-0100CW).

5.) Measure inclination angle or propeller shaft and correct if necessary.
Symptoms
Power transmission I Power transmission, noise I Howling/whistling

Power transmission I Differential I Rear axle differential I Rear axle differential, noise I Howling

Power transmission I Drive shaft I Propeller shaft I Propeller shaft - noises I Humming/droning
Validity

Vehicle
Engine
Transmission
203.004
611
722.619
203.004
611
716.601
203.006
611
722.699
203.006
611
716.640
203.040
271.948
722
203.040
271.948
716.628
203.040
271.948
716
203.042
271.940
722
203.042
271.940
716.631
203.042
271.940
716.605
203.042
271.940
716
203.043
271.942
722
203.043
271.942
716
203.046
271.946
722
203.046
271.946
716.631
203.046
271.946
716.605
203.046
271.946
716
203.052
272.920
716.638
203.054
272.940
716.669
203.056
272.960
716.664
203.061
112.912
716.623
203.204
611
722.619
203.204
611
716.601
203.206
611
722.699
203.206
611
716.640
203.240
271.948
722
203.240
271.948
716.628
203.240
271.948
716
08-12-2013 3:51 PM

©Copyright Daimler AG
PARKEGL

Page 2/10
ENTR

203.242

203.242

203.242
271.940

271.940

271.940
722

716.605

716.631
203.242

203.243

203.243

203.246
271.940

271.942

271.942

271.946
716

722

716
203.246

203.246

203.246
271.946

271.946

271.946
203.252

203.254

203.256

203.261
272.920

272.940

272.960

112.912
203.706
611
203.706
611

271.921
716.640
271.948

271.948

271.948

271.957

271.957

271.940
722

716.628

716

722

716
203.730

203.740

203.740

203.740

203.741

203.741

203.742

203.742
722

716.605

716.631

716

716.638

716.669

716.664

716.623

722.699

716
271.940
722

716.605
203.742
271.940
716.631
203.742

203.743

203.743

203.746

203.746

203.746

203.746
271.940

271.942

271.942

271.946

271.946

271.946
716

722

716

722

716.605

716.631

716
203.752

203.756

204.002

204.002

204.003

204.003

204.003

204.003

204.022

204.022

204.041

08-12-2013 3:51 PM
©Copyright Daimler AG
271.946

272.920

272.960

651.911

651.911

651

651

651.911

651.911

642.960

642.960

271
716.638

716.664

716

722.646

722.646

711

722.646

711.670

722

711

722.695
PARKEGL

Page 3/10
•
ENTRY

204.041

204.041

204.041

204.044
271

271.950

271.950

271
716.635

722.695

716.635

722
204.044
271
716
204.044
271.910
722.695
204.044

204.045

204.045

204.046

204.046

204.046
271.910

271.910

271.910

12 3 4

SaleBestseller No. 1

OTOFIX D1 Lite 2026 Bidirectional Scan Tool, Bluetooth OBD2 Scanner Diagnostic Tool, 2 Years Free Update, 38+ Services, CANFD & DoIP Protocols, All System Diagnoses, ABS Bleeding, Auto VIN

🎉[OTOFIX D1 Lite, Perfect Cost-effective Diagnostic Tool]: OTOFIX D1 Lite, a newest bidirectional scan tool from OTOFIX company, is a great choice for DIYers and repair shops. 👉This obd2 scanner diagnostic tool packs all practical functions: OE level all systems diagnoses, Bi-Directional Control, 38+ reset services fixing 99% of common problems, support DoIP & CANDF protocols and FCA AutoAuth, high-end hardware configuration. Worldwide vehicles and 🔥2 Years Free Updating🔥 covered.
🎉[Bi-Directional Scan Tool, Active Test]: OTOFIX D1 Lite bluetooth obd2 scanner can also command ECUs and monitor the operation of the actuators to track down the problems of certain parts, like windows, sunroof, wipers, fuel pumps, etc., saving repair time & trouble. This makes OTOFIX D1 Lite the most cost-effective bidirectional scan tool.
🎉[2026 Newest, 38+ Hot Reset Functions]: Equipped with 38+ reset functions in one, the OTOFIX D1 lite automotive scanner diagnostic tool allows you to troubleshoot 99% of common vehicle problems. You can use this car diagnostic scanner holding enough functions to easily repair common vehicle models in your repair shops. Including Oil Reset, Injector Coding, Throttle, DPF Reset, SCR Reset, Gear Learning, Clutch Learning, Suspension, etc. Note* Reset functions vary by model.
🎉[OE Level Full Systems Diagnostics]: Unlike the 2-system and 4-system diagnostic tools, the OTOFIX auto scan tool can complete comprehensive system diagnostics within 5 minutes. It accesses and scans all available onboard systems like for Engine /AT /ABS /EPB /BMS /TPMS /SRS /SAS /Audio System /BCM /Air Conditioning / etc., to read & clear codes, view live data, and check ECU information. Note: Active test is not involved.
🎉[Powerful Hardware Configuration]: Designed with a fashion appearance & a 7” touchscreen and a weight of 463g, this OTOFIX D1 Lite OBD2 diagnostic scanner scan tool is convenient for everywhere and easy to use & store. Android9.0 OS and 2+64GB memory enhance multi-task smoothness and diagnostic operation, no more wasting too much time. 5800mAh battery allows hours-lasting use. WiFi & VCI1 also bring faster communication for your diagnostics.

SaleBestseller No. 2

OTOFIX D1 Lite Bidirectional Scan Tool with 2-Year Free Updates, 2026 New All System Automotive Diagnostic Scanner, 38+ Reset Services, FCA AutoAuth, Active Test, CANFD&DOIP, Auto VIN

🏆【2026 TOP OBD2 Scanner Diagnostic Tool】OTOFIX D1 Lite wireless obd2 scanner has upgraded hardware configuration and car coverage. The newly upgraded D1 Lite with 🔥OS Android 9.0🔥1.5Ghz 4 core high efficiency processor🔥2GB RAM+64GB ROM large storage🔥5800mAh large battery, more stable and longer lasting diagnostics🔥 38+ Reset🔥action tests🔥full system diagnostic🔥Supports MV105 endoscope🔥21+ Language Supports🔥100000+ vehicle coverage to meet all your daily maintenance needs.
👍【Bi-Directional Control / Active Test】D1 Lite obd2 scanner has bidirectional control(worth $300+), which is the most beloved feature among mechanic. If your headlights or car windows are broken, going to a repair shop will cost a lot of money. You can use D1 Lite to send execution commands to the ECU module and identify the repair status. Such as ABS, car windows, doors, valves, wipers, headlights, etc., effectively shorten diagnostic time and reduce diagnostic costs.
🔥【All Systems Diagnostics, In-depth Checking】This advanced OBD2 Scanner D1 Lite can perform OE-level diagnosis of all systems including engine, transmission, airbag, ABS, ESP, TPMS, gateway, steering, radio, and air conditioning for more than 100 brands. This diagnostic scanner supports essential functions, such as reading ECU version info, reading and clearing fault codes, and reading data streams.With just a simple click, it provides you with accurate and in-depth diagnostics.
🏆【38+ Reset Hot Functions】For repair workshops, holding an OTOFIX D1 Lite Auto scanner is a strong advantage over others. Its 38+ maintenance functions provide various solutions for all module repairs, including Oil Reset, TPMS Reset, Injector Coding, Suspension, Throttle Matching, etc., which will usher your repair business to a new pinnacle. Continuously updating will never make the functionality & compatibility out-of-date.
🏆【150+ Models, 10000+ Car Coverage & 16 Languages】D1 Lite is a comprehensive car diagnostic scan tool, help you to troubleshoot car issues fast for 95% US, European, Asian auto makes. ✅ With frequent updates and optimizations allow D1 Lite to cover more vehicles to meet your needs. ✅ Multilingual menu allows auto mechanics around the world to use it without language barriers. 🚩Note: Kindly send us the S/N of the device to authorize new language updates before changing the menu language.

SaleBestseller No. 3

OTOFIX D1 Lite 2026 Bidirectional Scan Tool, 2 Years Free Update, 38+ Services, All System Diagnostic Scanner, Active Tests, AutoAuth FCA SGW, AutoVIN, CAN FD & DoIP, 99% Car Coverage

【2026 OTOFIX D1 Lite Gives the Best Value for Money】OTOFIX D1 Lite bidirectional scan tool is more FASTER and SMARTER with 2026 Enhanced Hardwares & New Functions! 👍Alternative Bluetooth +USB connect 👍2G+64GB 👍4x ARM Cortex-A35 (1.5GHz) Processor (5X Faster CPU) 👍Android 9.0 OS 👍5G GHz WiFi 👍CANFD&DOIP 👍 FCA AutoAuth 👍38+ Services 👍3K+ Bi-Directional Control 👍Full Systems Diagnose 👍2 Years Update 👍150+ Vehicle Coverage.
👍【Active Tests】 OTOFIX D1 Lite is a bi-directional scan tool that can send commands to, and also receive information from vehicle control modules. This way, you can quickly locate and repair faulty auto parts. For Example: send direct commands to ask the vehicle to turn on/off the radiator fan, lights, sound horn, fuel pump, modulate throttle, open/close windows, operate mirrors and more. *Note that only available tests will be displayed in the menu.
👍【38+ Service Functions】 OTOFIX D1 Lite scan tool offers 38+ of the hottest service functions that are commonly used for car repairs. That include Oil reset/SAS/EPB/BMS/Throttle/ABS bleeding, and 2065-new SUS/ADBLUE/NOX/Headlamp resets (and more) to help restore your car status after repairs are done. Compared to other diagnostic scanners for cars, the OTOFIX D1 Lite scanner is much more fully-featured. *Note that specific functions available depend on the make/model/year of your car.
👍【All System Diagnostics + Cloud Report Management】 This 2026 car scanner OTOFIX D1 Lite provides troubleshooting and data for all ECUs: read/clear DTCs, view graphic live data/VIN, and locate system faults for safe driving. With Cloud Report Management, you can save detailed reports to cloud servers and easily shared them with others via QR codes/emails/text messages. Others can access these reports from any device (smartphones/tablets/PCs …) anytime, and you can better manage repair work.
👍【99% Car Coverage】 This one-station car scanner diagnostic for all cars works on 150+ major car brands across the world. 1) It supports CAN-FD/DoIP protocols: compatible with GMCAVALIER/TRAX/Encore/Envision/GL8(LSY)/CT4/CT5 after 2019; Volvo after 2018; Land Rover/Jaguar after 2017; and BM.W F/G all chassis. 2) For models equipped with security modules (such as Renault & 2018+ FCA SGW), its built-in AutoAuth allows you to easily break diagnostic barriers after registration.

This product presentation was made with AAWP plugin.

Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

Buffer Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads Bluesky Copy Mastodon Nextdoor